Aviva is in a state of flux. The group faces regulatory changes, such as the 2015 pensions freedom reforms. It has been on the M&A trail, through its takeover of rival Friends Life. And now, it has set its sights on disrupting the Asian life market.

It's also been a decent long-term investment since a strategic shift in 2012. Cash generation is up, debt is down, and non-core businesses are gone.

Financial services writer Emma Powell spoke to Aviva's head of UK insurance Andy Briggs about the how investors can value life assurance in a diversifying business. Produced by Dominic Toms.